Combination lock



2 SHEETSSHEET l.

2 SHEET S-SHEET 2.

FILED SEPT. 21,1922.

,jvwantoa Patented Mar. 27, 1923.

UNITED STATES VENANZIO B. CORTESE, OF LATTIMER MINES, PENNSYLVANIA.

COMBINATION LOCK.

Application filed September 21, 1922. Serial No. 589,593.

T 0 all whom it may concern:

Be it known that I, VENANZIO B. Conrnsn, a citizen of the United States of America, residing at Lattimer Mines, in the county of Luzerne and State of Pennsylvania, have invented certain new and useful Improvements in Combination Locks, of which the following is a specification.

This invention relates to certain new and useful improvements in combination locks and has particular reference to a lock embodying a plurality of disk tumblers for controlling the sliding movement of a latch bolt.

The primary object of the invention resides in the provision of a combination lock wherein a plurality of disk tumblers are associated with and control the movement of a pair of sliding latch bolts having their paths of movement at right angles to each other.

The invention further provides in a combination lock of the type above set forth, the provision of a laterally shiftable bolt that cooperates with the disk tumbler capable of being moved to a position to permit the usual operation of the latch bolt by the door knobs associated with the lock structure.

lVith the above general objects in view and others that will appear as the nature of the invention is better understood, the same consists of the novel form, combination and arrangment of parts hereinafter more fully described, shown in the accompanying drawings and claimed.

In the drawings, wherein like reference characters designate corresponding parts throughout the several views,

Figure l is a side elevational View of the inner face of a lock casing constructed in accordance with the present invention,

Figure 2 is a fragmentary plan View of a door and casing with the lock operatively carried by the door with the angularly disposed sliding latch bolts engaging keepers in the door frame,

Figure 3 is a plan view of the lock with the cover removed showing the angularly disposed latchbolts retracted to their open or inoperative positions as indicated by dotted lines, and also the rotating disk tumblers associated with the latch mechanism,

I Figure 4 is a longitudinal sectional view taken on line IV-IV of Fig. 3 showing one of the sliding latch bolts and the pivotally mounted dog carried by the sliding latch bolt and associated with the disk tumblers,

Figure 5 is-a cross sectional view taken on line VV of Fig. 4 showing the disk tumblers and-the dog associated therewith,

Figure 6 is an edge elevational view of two of the disk tumblers showing the block projections adapted for interengagement carried by adjacent faces of the tumblers,

Figure 7 is a fragn'ientary plan view of one of the disk tumblers showing the block projection positioned adjacent the periphery thereof,

Figure 8 is a fragmentary plan view of a portion of the latch bolt mechanism showing the dog laterally shifted to permit free movement of the sliding latch bolts,

Figure 9 is a fragmentary plan View of the inner face plate of the block showing the shifting arm for the tumbler bolts,

Figure 10 is a detail sectional view showing the tensioned latch pin for positioning the tumbler bolt shifting arm, and

Figure 11 is a fragmentary view showing a portion of one of the tumbler disks and the normal position of the tumbler bolt relative thereto.

Referring more in detail to the accompanying drawings, there is illustrated a combination lock embodying a pair of angularly disposed sliding latch bolts capable of operation independently of the permutation mechanism and embodying a lock casing having spaced face plates 1 and 2 separated by a rectangular framewall embodying the side sections 3 and 4 and end sections 5 and (5, the face plates 1 and 2 being connected by bolts 7.

A sliding latch bolt 8 extends longitudinally of the lock casing and projects through the end wall 6 as shown in Figs. 3 and 4, said latch bolt 8 being formed of connected plate sections as shown in Fig. 4 to provide side grooves 8 into which extensions from the guide frame 9 project, the guide frame being anchored as at 10 to the face plate 2 of the lock casing. The sliding latch bolt 8 is provided with a longitudinal slot 11 shown by dotted lines in Fig. 3, and through which slot the knob spindle 12 extends and is provided with a knob 13 upon each projecting end thereof. To maintain the sliding latch bolt 8 under tension, and to hold the same at its limit of outward movement, a

post 14 projects outwardly from the face plate 2 adjacent one lower edge of the guide frame 9 as shown in Figs. 3 and 4, a lever arm 15 being pivotally mounted at one of its ends upon said post with a coil spring 16 surrounding the post and anchored thereto at one of its ends while the other end of said spring is anchored to the arm 15 as clearly illustrated. A bolt 17 is carried by the inner end of the latch bolt 8 as shown in Figs. 3 and 8, one end of the bolt projecting through a slot 18 in the face plate 2 of the lock casing, while the other end of said bolt projects from the opposite face of the latch bolt to extend through a slot 19 provided-in the adjacent end of the lever arm 15, said arm under influence of the spring 16 moving the latch bolt 8 to its limit of outward movement with the spindle 12 of the handle knob engaging the lower or inner end of the bolt slot 11 for limiting said outward movement.

To manually operate the latch bolt 8 for retracting the same into the lock casing to a releasing position, a plate 20 carrying side extensions 21 having cam surfaces 21 is fixed to the spindle 12 adjacent the bolt 17. The lower end of the plate 20 normally engages the adjacent end of the arm 15 as shown by dotted lines in Fig. 3, rotation in either direction of the knob spindle 12 causing either of the cam surfaces 21 upon the side extensions 21 of the plate 20 to engage and move the arm 15 against the tension of the spring 16 for lowering the latch bolt 8 by the pin and slot connection above described. I

An angularly disposed sliding latch bolt 22 isslidable transversely of the lock casing through the side wall 4, the latch bolt 22 being slotted as at 23 through which the pin 24 carried by the face plate 2 extends. The inner end of the latch bolt 22 is provided with a diagonal slot 25 receiving the bolt 17 of the latch bolt 8 while an angle bracket 26 carried by the side wall 3 of the lock casing is positioned vfor engagement with the adjacent side edge of the latch bolt 22 to retain the same properly positioned during the reciprocal movement thereof. It will therefore be seen that when the latch bolt 8 is drawn inwardly of the lock casing by the swinging movement of the arm 15, the pin 17 carried by said latch bolt will be moved downwardly in the inclined or diagonal slot 25 for shifting the latch bolt 22 inwardly of the casing as illustrated by dotted lines in Fig. 3, the bracket arm 26 associated with the adjacent side edge of the latch bolt 22 retaining the same in proper position.

A plurality of permutation disk tumblers Y is associated with the latch bolt mechanism, a spindle shaft 27 extending transversely of the lock casing adjacent the lower end thereof and carrying knobs 28 upon the projecting ends supports a plurality of permutation disks 29 that are loosely journaled thereon with the exception of the outer disk 29 which is keyed to the knob spindle 27 by the disk 30. The disks 29 are shown in detail in F igs. 6, 7 and 11, each disk being provided-with a series of openings 31 adjacent the periphery thereof for the reception of a block 32 carried by opposite faces thereof for engagement with the block upon the adjacent disk, the spaced openings 31 accommodating the changing of position of the blocks 32 upon said disk tumblers. Each disk tumbler 29 has a peripheral groove or slot 33 that is adapted to be brought into alinement or registration upon rotation of the several disk tumblers 29 for purposes presently to appear.

The mechanism cooperating with the latch bolt and the disk tumblers embodies a dog 34 carried by a shank 35 that is fixed to a pin 36 journaled through the inner end of the latch bolt 8 and extending through the slot .18 in the face plate 2 of the lock casing.

A lever 37 is fixed at one of its ends to the projecting end of the pin 36 and is disposed beneath the guard plate 38 positioned exteriorly of the face plate 2 and spaced therefrom as shown in Figs. 1 and 10. A spring arm 39 fixed at one end as at 40 to the inner face of the face plate 2 carries a latch head 41 extending through an opening 42 in said face plate for association with the projecting end of the lever 37 extending laterally of the guard plate 38 as shown in Fig. 1. When the lever 37 is positioned at the lower side of the latch head 41 as shown in Fig. 1, the dog 34 is alined with the latch bolt 8 and in a position tobe received in the registering openings 33 in the disk tumblers 29. Also, when the dog 34 is so positioned, and the disk tumblers 29 are rotated to displace the openings 33 therein out of registration, the sliding latch bolts 8 and 22 are locked in an extended position against the movement by said dog engaging the peripheral edges of the disk tumblers. When the lever 37 is shifted to the other side of the latch head 41 as shown in Fig. 9, the dog 34 is moved thereby to a position as indicated in Fig. 8 permitting the usual operation of the latch bolts 8 and 22 by turning the knob spindle 12. A graduated disk 43 is carried by each end of the spindle 27 outwardly of the face plates 1 and 2 for determining the relative positions of the disk tumbler slots 33 within the lock casing as shown in Figs. 4 and 8. The shank 35 of the dog 34 carrie'sapin 44 that is adapted to engage the lower projecting end 9 of the guard plate 9 when the dog is positioned in alinement with the latch bolt 8 and cooperates with the lever 37 and tensioned latch head 41 for holding the dog 34 so positioned. v

From the above description of the device, it is believed that the construction and operation thereof will at once be apparent, it being noted that when the dog 34 is laterally shifted to the full line position shown in Fig. 8, or the dotted line position shown in Fig; 3, by moving the lever 37 to the opposite side of the tensioned latch head 41, said dog 84 will be so positioned to permit the usual operation of the latch bolts 8 and 22 by rotating the knob spindle 12, the operation of said latch bolt being described above in detail. By reversely rotating the spindle 27, and the outer disk tumbler 29 keyed thereto, the remaining disk tumblers 29 may be rotatably shifted within the lock casing to place the peripheral openings 33 in alinement for the reception of the dog 34 when the latter is moved to its locking position as shown by full lines in Figs. 3 and a, the dog at being received in the alined slots 33. When said slots are out of alinement, the dog 34 will engage the peripheral edges of the disk tumblers 29 and prevent the operation of the latch bolts 8 and 22.

While there is herein shown and described the preferred embodiment of the present invention, it is nevertheless to be understood that minor changes may be made therein without departing from the spirit and scope of the invention as claimed.

lVhat I claim is 1. In a combination lock, a lock casing, a tensioned sliding latch bolt mounted therein, a plurality of disk tumblers journaled in the casing, a dog pivotally mounted on the inner end of the latch bolt cooperating with the disk tumblers for holding the latch bolt in a projected locked condition and adapted to be shifted to a position remote from the disk tumblers to permit free op eration of the latch bolt. and an operating handle for the dog positioned exteriorly of the lock casing.

2. In a combination lock, a lock casing, a tensioned sliding latch bolt mounted therein, a plurality of disk tumblers journaled in the casing, a dog pivotally mounted on the inner end of the latch bolt cooperating with the disk tumblers for holdingthe latch bolt in a projected locked condition and adapted to be shifted to a position remote from the disk tumblers to permit free operation of the latch bolt, an operating handle for the dog positioned exteriorly of the lock casing, and a tensioned latch associated with said handle for retaining the dog in its shifted I position.

journaled in the opposite walls of the lock casing and freely extending through said slot, the tensioned mounting for the latch bolt including a pin carried by the latch bolt, a tensioned lever arm having a slot therein receiving the pin, and a double cam plate fixed to the knob spindle adapted to be moved into engagement with the lever arm for shifting the latch bolt.

i. In a combination lock, a lock casing, a tensioned sliding latch bolt mounted therein, a plurality of disk tumblers journaledin the casing, means carried by the latch bolt cooperating with the disk tumblers for controlling operation of the latch bolt, said latch bolt having an elongated slot therein, a knob spindle journaled in the opposite walls of the lock casing and freely extending through said slot, the tensioned mounting for the latch bolt including a pin carried by the latch bolt, a tensioned lever arm having a slot therein receiving the pin, and a double cam plate fixed to the knob spindle adapted to be moved into engagement with the lever arm for shifting the latch bolt.

5. In a combination lock, a lock casing, a tensioned sliding latch bolt mounted therein, a plurality of disk tumblers journaled in the casing, means shiftably carried by the latch bolt cooperating with the disk tumblers for holding the latch bolt in a projected locked condition and adapted to be shifted to a position remote from the disk tum blers to permit free operation of the latch bolt, said latch bolt having an elongated slot therein, a knob spindle journaled in the opposite walls of the lock casing and freely extending through said slot. the tensioned mounting for the latch bolt including a pin carried by the latch bolt, a tensioned lever arm having a slot therein receiving the pin, and a double cam plate fixed to the knob spindle adapted to be moved into engagement with the lever arm for shifting the latch bolt.

6. In a combination lock, a lock casing, a tensioned sliding latch bolt mounted therein, a plurality of disk tumblers journaled in the casing, a dog pivotally mounted on the inner end of the latch bolt cooperating with the disk tumblers for holding the latch bolt in a projected locked condition and adapted to be shifted to a position remote from the disk tumblers to permit free operation of the latch bolt, said latch bolt having an elongated slot therein, a knob spindle journaled in the opposite walls of the lock casing and freely extending through said slot, the tensioned mounting for the latch bolt including a pin carried by the latch bolt, a tensioned lever arm having a slot therein receiving the pin, and a double cam plate fixed to the knob spindle adapted to be moved into engagement with the lever arm for shifting the latch bolt.

7. In a combination look, a lock casing, a tensioned sliding latch bolt mounted therein, a plurality of disk tumblers ournaled in the casing, a do flpivotally mounted on the inner end otthe latch bolt cooperating with the disk tumblers for holding the latch bolt in a projected locked condition and adapted to be shifted to a position remote from. the disk tumblers to permit tree operation'of the latch bolt, an operating handle for the dog positioned eXter-iorly of the lock casing, said latch bolt havingan elongated slot therein, a knob spindle journaled in the opposite walls of the lock casing and freely extending through said slot, the tensioned mounting for the. latch bolt including a. pin carried by the latch bolt, a tensioned lever arm having a slot the-rein receiving the pin, and a double cam plate fixed to the knob spindle adapted .to be moved into engagement with the lever arm for shifting the latch bolt.

8. In a combination lock, a lock casing, a tensioned sliding latch bolt mounted therein, a. plurality of disk tumblers journaled in the casing, a dog pivotally mounted on the inner end of the latch bolt cooperating with the disk tumblersfor holding the latch boltin a projected locked condition and adapted to be shifted to a position remote from the disk tumblers to pern'ut free operation of the latch bolt, an operating handle for the dog positioned exteriorly of the lock casing, a tensioned latch associated with said handle for retaining the dog in its shifted position, said latch bolt having an elongated slot therein, a knob spindle ournaled in the opposite walls of the lock casing and freely extending through said slot, the tensioned mounting for the latch bolt including a pin carried by the latch bolt, a tensioned lever arm having a slot there-in receiving the pin, and a double cam plate fixed to the knob spindle adapted to be moved into engagementwith the lever arm for shifting the latch bolt.

9. In a combination lock, a lock casing, a latch bolt slidably mounted therein, a tensioned lever pivoted in the casing and having a slot in one end thereof, a pin carried by the latch bolt received in the slot of said lever, and a second angular-1y disposed slid-- ing latch bolt associated with the bolt pin.

10. In a combination look, a lockcasing, a latch bolt slidably mounted therein, a tensioned lever pivoted in the oasing'a-nd having a slot in one end thereof, a pin carried by the latch bolt received in the slot of said lever, and a second angular-1y disposed sliding latch bolt having a diagonal slot therein receiving the pin to be operated simultaneonsly with the first named latch bolt.

11. In a combination look, a lock casing, a latch bolt slidably mounted therein, a tensioned lever pivoted in the casing and having a slot in. one end thereof, a pin carried by the latch bolt received in the slot of said lever, a second angularly disposed sliding latch bolt associated with the bolt pin,a pivotally mounted dog member carried by the first named latch bolt, and a plurality of gisk tumblers associated with the dog mem- 12. In a combination lock, a lock casing, a latch boltzslidably mounted therein, a tensioned lever pivotedin the casingand having a slot in one end thereof, a pin carried by the latch bolt received in the slot of said lever, a second angularly disposed sliding latch bolt having a diagonal slot therein receiving' the pin to be operated simultaneously with the first named latch belt, a pivotally mounted dog member carried by the first named latch bolt, and a plurality of disk tumblers associated with the member. I

13. In a combination look, a lock casing, a latch bolt slidably mounted therein, a tensio-ned lever pivoted in the casing and having a slot in one end thereof, a pin carried by the latch bolt received in the slot of said lever, a second angula-rly disposed sliding latch bolt associated with the bolt pin, a pivotally mounted member carried by the first named latch bolt, a plurality of disk tuniblers associated with the member, each disk tumbler having a block projection adjacent the periphery thereof facing the adjacent tumbler, a knob spindle rotatab-ly support ing the tumblers, and one of said tumblers being fixed to said spindle. 1.4. In a combination look, a lock casing, a. latch bolt slidably mounted therein, a ten sioned lever pivoted in the casing and having a slot in one end thereof, a pin carried by the latch bolt received in the slot of said lever, a second angularly disposed sliding latch bolt having a diagonal slot the-rein receiving the pin to be operated simultaneously with the first named latch bolt, a pivotally mounted member carried by the first named latch. belt, a plurality of disk tumblers asso# ciated with the member, each disk tumbler having a block projection acent the P6? riphery thereof facing the adj acent tumbler, a knob spindle rotatably supporting the tumblers and one of said tumblers being fixed to said spindle. a

In testimony whereof I afiix my signature.

VENANZIO B. CORTESE.

lio 

